Answer:
[tex]2a+15abc+4[/tex]
Step-by-step explanation:
[tex](2a-16abc-45)+(2a+7abc+11)[/tex]
[tex]\implies 2a-16abc-45+2a+7abc+11[/tex]
collect and combine like terms:
[tex]\implies 4a-9abc-34[/tex]
[tex](6a+6abc-30)-(4a-9abc-34)[/tex]
Apply the distributive law [tex]-\left(a-b\right)=-a+b[/tex]:
[tex]\implies 6a+6abc-30-4a+9abc+34[/tex]
collect and combine like terms:
[tex]\implies 2a+15abc+4[/tex]
